#define APIN 4 
int in;

void setup() 
{
  // put your setup code here, to run once:

   Serial.begin(115200);
   analogReadResolution(12);
  
}

void loop() 
{
  // put your main code here, to run repeatedly:
   in = analogRead(APIN);
   Serial.println(in);
   delay(100);
}
